densglass ultra™ shaftliner shaftwall/stairwell system -...

Shaftwall/Stairwell Systems

Moldand MoistureResistant

PAPERLESSSOLUTIONS

DensGlass UltraTM Shaftliner Shaftwall/Stairwell Systems

Table of Contents

Product Overview . . . . . . . . . . . . . . . .2

Installation Instructions . . . . . . . . . . . .3

Recommendations . . . . . . . . . . . . . . . .3

Design for Vertical Membranes . . . . .4

Design for Horizontal Membranes . . .5

Maximum Horizontal Spans . . . . . . . .6

Maximum Section Properties . . . . . . .6

Limiting Heights . . . . . . . . . . . . . . . . .6

Door-Frame Details . . . . . . . . . . . . . . .7

Wall-Frame Details . . . . . . . . . . . . . . .8

Rails/Chute/Beam Details . . . . . . . . . .9

Architectural Specifications . . . . . . .10

Product Overview DensGlass UltraTM Shaftliner PanelAs building technology has become more sophisticated over the years, G-P Gypsum has evolvedto keep in step with the changing gypsum industry. We recognized decades ago the need in high-riseconstruction to decrease construction time, increase safety around shafts, eliminate the weight ofmasonry, increase seismic safety and decrease construction costs overall. We developed our shaftwalland stairwell assemblies with those goals in mind.

In signature buildings around the world, our lightweight, maintenance-free shaftwall/stairwellenclosures serve as the perfect substitute for heavy and expensive masonry construction in buildingcores. In addition, DensGlass UltraTM Shaftliner panel shaftwall/stairwell assemblies save space, goup quickly and don’t delay construction during cold weather.

Space-saving DensGlass Ultra Shaftliner panel shaftwall/stairwell enclosures are designed forelevator and air shafts, stairwells and mechanical services in industrial areas where greater heightsare common and as firewalls between office, warehouse and manufacturing areas. They are also usedas horizontal membranes for corridor and stairway ceilings and across mechanical equipment wherefire ratings are required and normal suspension support may be difficult.

Easy InstallationBecause our shaftwall assemblies are built from one side only, there’s no need to access the inside ofthe shaft. The strong, C-T, C-H or I steel members go up quickly. Most configurations require only twosteel components and two types of gypsum board. That makes our systems ideal for furred chases andinterior partitions where fire ratings are required for exterior walls and access is restricted. Engineeredfor durability, our systems withstand the air-pressure surges of high-speed elevators as well as thelateral impact of stairway doors.

Built-In EconomyOur shaftwall/stairwell systems typically cost 20 percent less than masonry. Cost savings can be evengreater when masonry requires a finish. Contractors also save money, since our shaftwall/stairwellenclosures don’t require expensive structural framing or concrete construction.

Building Code ComplianceGP Gypsum shaftwall/stairwell enclosures meet the requirements the codes of major jurisdictionsthroughout North America. Evaluated by ICC ES ER-2541.

Reliable Steel ComponentsThe two primary framing components in the DensGlass Ultra Shaftliner shaftwall/stairwell systemare slotted C-T, C-H or I studs and J tracks, manufactured from galvanized steel that meets therequirements of ASTM A 653 and A 924.

The 2-1/2" steel framing system retains the popular 3-1/2" wall thickness with a two-hour fire ratingto accommodate standard door framing dimensions. The Series 620 stud offers a unique feature —slotting in the web of the stud. Tests have demonstrated that these slots effectively improve resis-tance to thermal and noise transmissions.

The 2-1/2" stud provides a 1-1/2" air cavity for services. Studs are friction-fitted between top andbottom J tracks. Use J tracks for all closure details, including duct and door openings, abutments,intersections, etc. No other special metal components are required.

Studs are automatically spaced 24" o.c. maximum with our special shaftliner panels.

Manufacturers of steel components for use in the G-P Gypsum shaftwall/stairwell system are DietrichIndustries, Inc., Marino Ware and Western Metal Lath.

The data relating to fire- and sound-tested assemblies is based on the characteristics, propertiesand performance of materials and systems obtained under controlled test conditions as set forth underthe appropriate ASTM standard, such as E 119 (fire), E 90 (sound) or E 72 (structural).

Limitations of Use• Series 620, 621, 622, 630 and 631 shaftwall assemblies are designed as non-load-bearing partitions.• Do not install in areas adjacent to occupancies with unusually high moisture conditions.• Provide control joints so that maximum length of continuous partition is 30'. Wherever possible, the

partition control joints should coincide with those in the building structure.• Elevator doors should be supported independently of the shaftwall. Interfacing of elevator frame to

shaftwall system may require attachment with jamb anchor clips.• Where penetrations occur in the partitions, additional reinforcement at corners may be necessary to

distribute stresses if control joints are not used and if excessive loads need to be supported.• To prevent air movement and resultant whistling and sound leakage, the partition perimeters as well

as all penetrations should be effectively sealed.• Finishing of all joints in face layers should be done within temperature limitations of the specific

joint treatment used.

When tested, as manufactured,in accordance with ASTM D3273, DensGlass Ultra Shaftlinerscored a 10, the highest level ofperformance for mold resistanceunder the ASTM D 3273 testmethod.

The score of 10, in the ASTM D3273 test, indicates no moldgrowth in a 4-week controlledlaboratory test. The mold resis-tance of any building productwhen used in actual job siteconditions may not produce thesame results as were achieved inthe controlled, laboratory setting.No material can be consideredmold proof. When properlyused with good design, handlingand construction practices,products with DensTM Technologyprovide increased mold resistancecompared to standard paperfaced wallboard.

2 • For latest information and updates: Technical Service Hotline 1.800.225.6119 or www.gpgypsum.com

• Use a fastening plate to secure the J track whenever fasteners are closer than 4" to the edge. Setting the plateat the time of concrete construction will avoid spalling by mechanical fasteners.

• Cut C-T, C-H or I studs 3/4" less than the height of the opening.• Cut 1" DensGlass Ultra Shaftliner panel 3/4" less than the height of the opening.• In structural steel-frame construction, install J track sections before applying spray-on fireproofing.• Items to be anchored to the wall (cabinets, sinks, handrails, etc.) should be fastened to the C-T studs or to

plates secured behind or between layers of 1/2" Fireguard C gypsum board. (See illustration on page 9.)• Joint compounds should be applied at ambient temperatures above 50°F (10°C) with adequate ventilation.• Use Type S screws for 25-gauge steel framing. Use Type S-12 screws for 20-gauge (or heavier) steel framing.• It is important that the job structural engineer approves the type, size and maximum spacing of track

fasteners to meet the design load requirements.

2-1/2",4" or 6"

Installation Instructions

Recommendations

C-T Stud1-5/8"

C-T Stud Detail

1-3/8"

1"

1/4"

3"

J Track

1"

2-1/2", 4" or 6"

2-1/4"

J-L Corner

1"

2-1/2", 4" or 6"

2-1/2",4" or 6"

1-1/2"



1. Lay out per construction drawings. Secure J track as perimeter framing on floor and plumb to ceiling andsides. Attach with suitable fasteners, spaced not more than 24" o.c.

2. Plan the stud layout 24" o.c. and adjust the spacing at either end so that the terminal stud will not fall closerthan 8" from the end.

3. Erect the first 1" DensGlass Ultra Shaftliner panel, cut 3/4" less than the total height of the framed section.Plumb the panel flush against the web of the J track and secure with 1-5/8" Type S screws 24" o.c. or bendout tabs in J track to secure panels in place. DensGlass Ultra panels can be installed with either side facingout, however some authorities may require labeling to be visible.

4. Insert a C-T, C-H or I stud, cut 3/4" less than the overall height, into the top and bottom J tracks and fit tightlyover the previously installed 1" panel.

5. Install the next 1" DensGlass Ultra Shaftliner panel inside the J tracks and within the tabs of the C-T, C-H or Istud. Note that the edges of the panel are beveled to help guide the panel into the slotted and tabbed sectionof the stud.

6. Progressively install succeeding studs and panels as described above until the wall section is enclosed.The final panel section may be secured with 1-5/8" Type S screws or tabs from the J track at 24" o.c.

7. For doors, ducts or other large penetrations or openings, install J track as perimeter framing. Use 20-gaugetrack with a 3" back leg for elevator doors and block cavity with 12" wide gypsum board filler strips for doorsexceeding 7'-0" height.

8. 1" DensGlass Ultra Shaftliner panels may be abutted, spliced or stacked within the cavity. The shorter panelshould be minimum 2' long or longer to engage two stud tabs on each panel edge. Joints of adjacent panelsshould be alternately stacked or staggered to prevent a continuous horizontal joint. NOTE: Fire tests wereconducted without back blocking of shaftliner joints.

9. For the 620 Series, finished one side, install the first layer of 1/2" ToughRock® FireguardTM C or 1/2" DensArmorPlusTM Fireguard C gypsum board horizontally with 1" Type S or S-12 screws spaced 24" o.c. (5/8" FireguardType X* or 5/8" DensArmor Plus Fireguard Type X gypsum board may be used in lieu of 1/2" Fireguard Cgypsum board, if desired). The horizontal joints should be offset from any splice joints in the shaftliner panelsby at least 12". The face layer may be installed either horizontally or vertically with 1-5/8" Type S or S-12screws spaced 8" o.c. All edge and end joints should be offset from the base layer by 24"o.c.

10. For the 621 Series, finished both sides, each side may be installed either horizontally or vertically with 1"Type S or S-12 screws spaced 8" o.c. Offset edges and ends on opposite sides 24" o.c.

11. For the 622 1-hour system, finished one side, apply the 5/8" Fireguard Type X* or DensArmor Plus FireguardType X gypsum board vertically with 1" Type S or S-12 screws spaced 8" o.c. around the perimeter and12" o.c. in the field.

12. For the 630 3-hour system, apply the face layer of 5/8" Fireguard C gypsum board with 2-1/4" Type S or S-12screws 12" o.c.

13. When used as HVAC ducts, consult with HVAC engineer regarding level of caulking and sealant required.All joints on face layers are to be taped and finished and fasteners finished with joint compound meetingASTM C 475. All penetration openings are to be filled with ToughRock® Fire-Halt® Sealant or otherfirestopping sealants.

14. For more information on firestopping through penetrations in shaftwall systems, contact Technical Servicesat 1-800-225-6119 or visit our Web site at www.gpgypsum.com and look under CAD drawings.

*For fire safety information, visit www.gp.com/gypsum/firesafety

Design Summary Vertical

Test Reference: GA File #, WP 7096, WHI Design, GP/WA 120-01

Approx. Weight: 9 psf

Glass fiber sound insulation thickness is 1", 2-1/2" and 3-1/2" for C-T, C-H or I studsof 2-1/2", 4" and 6" respectively. Finished one side. Components: 1" DensGlass UltraShaftliner panel, C-T studs and two layers of 1/2" DensArmor PlusTM FireguardTM C orToughRock® Fireguard C gypsum board installed horizontally or vertically. Edges andends offset 24" o.c.

C-T, C-H or I Stud 2-1/2" 4" 6"Wall Thickness 3-1/2" 5" 7"

STC = 40

STC = 47

Series 620 2-Hour Fire Rating

Test Reference: WHI Design, GP/WA 120-02


Glass fiber sound insulation thickness is 1", 2-1/2" and 3-1/2" for C-T, C-H or Istuds of 2-1/2", 4" and 6" respectively. Finished both sides with 1/2" DensArmorPlus Fireguard C or ToughRock Fireguard C gypsum board installed horizontallyor vertically. Edges and ends offset 24" o.c.

C-T, C-H or I Stud 2-1/2" 4" 6"Wall Thickness 3-1/2" 5" 7"

STC = 42

STC = 47




Glass fiber sound insulation thickness is 1", 2-1/2" and 3-1/2" for C-T, C-H or I studsof 2-1/2", 4" and 6" respectively. Finished one side. Components: 1" DensGlass UltraShaftliner panel, C-T studs and one layer of 5/8" ToughRock Fireguard or 5/8"DensArmor Plus Fireguard gypsum board installed vertically.

C-T, C-H or I Stud 2-1/2" 4" 6"Wall Thickness 3-1/8" 4-5/8" 6-5/8"

STC = 35




Glass fiber sound insulation thickness is 1", 2-1/2" and 3-1/2" for C-T, C-H or I studsof 2-1/2", 4" and 6" respectively. Finished one side. Components: 1" DensGlass UltraShaftliner panel, C-T studs and three layers of 5/8" ToughRock Fireguard C gypsumboard installed horizontally or vertically. Edges and ends offset 24" o.c.



STC = 43

STC = 48

Test Reference: Based on GA File #, WP 7451, WHI Design, GP/WA 180-01


Glass fiber sound insulation thickness is 1", 2-1/2" and 3-1/2" for C-T, C-H or Istuds of 2-1/2", 4" and 6" respectively. Finished both sides with 5/8" ToughRockFireguard C gypsum board installed horizontally or vertically. Edges and endsoffset 24" o.c.



STC = 45

STC = 50


STC = 39


Design Summary Horizontal

Test Reference: WHI-495-PSH-0128


Designed for ceiling or duct shaft and composed of 1" DensGlass Ultra Shaftlinerpanel supported by 2-1/2", 4" or 6" C-T studs and three layers of 1/2" ToughRockFireguardTM C or 1/2" DensArmor PlusTM Fireguard C gypsum board.


Test Reference: WHI-495-PSH-0153 & WHI-495-PSH-0197


Designed to separate a room from structure or space above and composed of1" DensGlass Ultra Shaftliner panel supported by 2-1/2", 4" or 6" C-T studs andthree layers of 1/2" ToughRock Fireguard C or 1/2" DensArmor Plus Fireguard Cgypsum board.


Test Reference: WHI-495-PSH-0183 &WHI-495-PSH-0196, WHI Design GP/CC 120-01


Designed to separate a room from structure or space above and composed of1" DensGlass Ultra Shaftliner panel supported by 2-1/2", 4" or 6" C-T studs andthree layers of 1/2" ToughRock Fireguard C or 1/2" DensArmor Plus Fireguard Cgypsum board.


1/2" DensArmor PlusTM Fireguard C, 5/8" DensArmor Plus Fireguard Type X and5/8" ToughRock® Fireguard Type X gypsum boards are manufactured to meet orexceed applicable sections of ASTM C 36, ASTM C 1177 and ASTM C 1396/CSA A82.27-M.

These products may be used for other related corridor and party walls, ofteneliminating the need to stock more than one type at the job site. Depending on thefire rating, one or more layers are installed on the C-T studs with drywall screws.Screws are not required to secure either layer to the top or bottom J tracks. Refer tothe sections covering specific fire ratings for the number of layers required and thedetailed attachment procedures.

1" DensGlass Ultra Shaftliner panels are manufactured to meet or exceed ASTM C442 and ASTM C 1396. Panels are made in a normal width of 23-7/8" with doublebeveled edges. DensGlass Ultra Shaftliner panels install easily within the flanges ofthe C-T studs. Screws may be installed at the top J track to hold the panel in place.

Drive 1-5/8" Type S screws 24" o.c. maximum through the shaftliner to the J track atcorner and abutments or use the turnout tabs to secure the panel in place.

These details are typical uses of the 620 wall system, as well as the 624 and 627systems for horizontal membranes for 2-hour ceiling and duct protection.

2-Hour Use for 620, 623, 624 & 627 for Horizontal Membranes and Ducts

DensGlass Ultra Shaftliner Components

A

C

D

A. 624

B. C-T, C-H or I stud

C. 620

D. 627

E. J-L corner



B

E

C-T Nominal Series 623/624/627Stud Gauge 2-Hour

L/240 L/360

When used as a horizontal membrane, the stud length should not exceed those in the following table.

2-1/2" 25 8' - 1" 7' - 1"2-1/2" 20 9' - 8" 8' - 5"4" 25 11' - 6" 10' - 0"4" 20 13' - 7" 11' - 10"6" 25 15' - 7" 13' - 7"6" 20 18' - 6" 16' - 2"

Maximum Horizontal Spans

C-T Stud & Design Uniform Load (PSF)Stud Track Deflection For 1-hr.* For 2- to 3-hr.**

Depth Gauge Limit 5 7.5 10 15 5 7.5 10 15

L/120 14' - 2" 12' - 5" 11 - 3" 9' - 4" 15' - 6" 13' - 3" 11' - 6" 9' - 5"L/180 12' - 5" 10' - 10" 9' - 10" 8' - 7" 13' - 7" 11' - 10" 10' - 9" 9' - 5"L/240 11' - 3" 9' - 10" 8' - 11" 7' -10" 12' - 4" 10' - 9" 9' - 9" 8' - 6"L/360 9' -10" 8' - 7" 7' - 10" 6' -10" 10' - 9" 9' - 5" 8' - 6" 7' - 6"L/120 15' -10" 13' - 10" 12' - 6" 10' -11" 17' - 4" 15' - 1" 13' - 9" 12' - 0"L/180 13' -10" 12' - 1" 10' - 11" 9' - 7" 15' - 1" 13' - 2" 12' - 0" 10' - 6"L/240 12' - 6" 10' - 11" 9' - 11" 8' - 8" 13' - 9" 12' - 0" 10' - 11" 9' - 6"L/360 10' -11" 9' - 7" 8' - 8" 7' - 7" 12' - 0" 10' - 6" 9' - 6" 8' - 4"L/120 19' - 1" 15' - 11" 13' - 10" 11' - 3" 19' - 7" 15' -11" 13' - 10" 11' - 3"L/180 16' - 8" 14' - 6" 13' - 2" 11' - 3" 18' - 3" 15'-11" 13' - 10" 11' - 3"L/240 15' - 1" 13' - 2" 12' - 0" 10' - 6" 16' - 7" 14' - 5" 13' - 2" 11' - 3"L/360 13' - 2" 11' - 6" 10' - 6" 9' - 2" 14' - 5" 12' - 8" 11' - 6" 11' - 3"L/120 21' - 8" 18' - 11" 17' - 2" 15' - 0" 23' - 8" 20' - 8" 18' - 9" 15' - 6"L/180 18' -11" 16' - 6" 15' - 0" 13' - 1" 20' - 8" 18' - 1" 16' - 5" 14' - 4"L/240 17' - 2" 15' - 0" 13' - 8" 11' -11" 18' - 9" 16' - 5" 14' - 11" 13' - 0"L/360 15' - 0" 13' - 1" 11' - 11" 10' - 5" 16' - 5" 14' - 4" 13' - 0" 11' - 5"L/120 22' - 7" 18' - 9" 16' - 3" 12' - 0" 22' - 11" 18' - 9" 16' - 3" 12' - 0"L/180 19' - 9" 17' - 3" 15' - 8" 12' - 0" 21' - 8" 18' - 9" 16' - 3" 12' - 0"L/240 17' -11" 15' - 8" 14' - 3" 12' - 0" 19' - 8" 17' - 2" 15' - 7" 12' - 0"L/360 15' - 8" 13' - 8" 12' - 5" 10' -10" 17' - 2" 15' - 0" 13' - 8" 11' - 11"L/120 27' - 4" 23' - 11" 21' - 8" 19' - 0" 30' - 0" 26' - 2" 23' - 7" 19' - 3"L/180 23' -11" 21' - 11" 19' - 0" 16' - 7" 26' - 2" 22' - 11" 20' - 9" 18' - 2"L/240 21' - 8" 19' - 0" 17' - 3" 15' - 1" 23' - 9" 20' - 9" 18' - 11" 16' - 6"L/360 19' - 0" 16' - 7" 15' - 1" 13' - 2" 20' - 9" 18' - 2" 16' - 6" 14' - 5"

* 1-Hr. Rated Series 622 ** 2-Hr. Rated Series 620 or 621 & 3-Hr. Rated Series 630 or 631.

Test Ref: WHI-495-TRL-0206/0225, issued August 4, 1995. C-T studs and J track are same gauge.Based on deflection limits with adjustment to conform to a minimum safety factor of 1.5 for ultimate bending strength and end reaction.WHI = Warnock Hersey International Testing Laboratory

C-T Stud Size T W A Ix Sx(C) Sx(T)

2-1/2"-25 gauge 0.0179 0.470 0.118 0.132 0.095 0.1182-1/2"-20 gauge 0.0329 0.820 0.218 0.242 0.175 0.217

4"-25 gauge 0.0179 0.580 0.145 0.374 0.171 0.2074"-20 gauge 0.0329 1.020 0.267 0.687 0.341 0.3806"-25 gauge 0.0179 0.715 0.181 0.957 0.299 0.3476"-20 gauge 0.0329 1.260 0.333 1.759 0.543 0.637

T = Minimum Uncoated Base Steel Thickness (inches) Ix = Moment of Inertia (inches4)W = Weight (pounds per linear foot) Sx(C) = Section Modulus ‘C’ flange (inches3)A = Sectional Area (inches2) Sx(T) = Section Modulus ‘T’ flange (inches3)

Based on AISI Specifications for the Design of Cold-Formed Steel Structural Members.

Maximum Section Properties

Limiting Heights for 1-, 2- and 3-Hour Systems

2.5" 25

2.5" 20

4" 25

4" 20

6" 25

6" 20



Span calculations based on stud properties. Use 20-gauge J track.

I K

LC

M

M

LC

I K

D

J

I

K

L

E

FF

H

G

G H

A

C

C

B

C

Door Frame Details

There are numerous elevator door frame combinations and special conditions that cannot be detailed beyondgeneral conditions in this catalog. The interface of the shaftwall system and elevator door frame should beaddressed in the shop drawings of the elevator and/or frame manufacturer literature.

A. C-T, C-H or I studs 24" o.c.

B. Pan head screws on both sides of door framing

C. J track

D. Alternate to bending tabs: use 1-5/8" type S screws at 24" o.c.

E. Gypsum board filler strips may be required where jambs are in placeprior to walls

F. 20-gauge J track

G. 20-gauge J track screwed to jamb anchor clips

H. Solid gypsum board filler strips as required for frames

I. 1" DensGlass UltraTM Shaftliner gypsum board

J. Tabs in J track

K. 1/2" DensArmor PlusTM FireguardTM C gypsum board or 1/2" ToughRock®

Fireguard C gypsum board

L. Sealant

M. Power actuated fasteners 24" o.c.

Doo

rHea

der

Door Jamb

Door Header Door Jamb, Typical

620 Series 621 Series

Control Joint View of Top of Wall View of Base



EC B

A

F

F

E

B

C H

B

G

A

H

G

I

C

GH

J

A

B

C

BA

K

A

C

C

DB

B

Outside Corner

Inside Corner

Wall Frame Details

Column Bypass

Corner Column Bypass

A. Alternate to bending tabs: use 1-5/8" type S screws at 24" o.c.

B. Tabs in J track bent out at 24"

C. J track

D. Attached to J track prior to installation.

E. Metal C stud or J track where span is over 24"

F. Spray-on fireproofing

G. 1/2" DensArmor PlusTM FireguardTM C or 1/2" ToughRock® FireguardC gypsum board

H. 1" DensGlass UltraTM Shaftliner gypsum board

I. Sealant

J. Control joint

K. Corner bead

Stairwell Control Joint

1/2" min.

1/2" min.

3/4"

View from End of Wall



I

C

A

F

E

G

B C

B C

E

G

B

HF

I

D

B

A

Call Box/Outlet Box/Mail Chute4" minimum height behind box and screw attached to tabs orflanges of C-T studs or J track.

Rails/Chute/Beam Details

A. Alternate attachment inside shaft

B. 1" DensGlass Ultra Shaftliner gypsum board

C. 1/2" DensArmor PlusTM FireguardTM C or 1/2" ToughRock® Fireguard C gypsum board

D. Typical call indicator box

E. Spray-on fireproofing

F. Fasteners 24" o.c.

G. J track

H. Handrail

I. 6" wide 16-gauge steel backing plate screwed to C-T Studs

Heavy-Duty HandrailBacking for attachmentof a wide variety ofitems in commercial andindustrial usage typicallyuses 16-gauge steel stripsattached to the framing.Special loads should begiven particular attention.

Steel Beam

Steel Beam Offset



Architectural Specifications

1.0 Description of Work

The types of work herein specified include, but are not limited to, shaftwall partition systems.

1.1 Quality AssuranceWhere shaftwall systems with fire resistance ratings are indicated, provide DensGlass UltraTM Shaftliner panels.Provide fire resistance rated assemblies identical to those indicated by reference to WHI (Warnock HerseyInternational) numbers or in listing of other testing agencies acceptable to authorities having jurisdiction.

1.2 QualificationsAll shaftwall framing, shaftliner, gypsum board and joint treatment materials shall be manufactured or providedby G-P Gypsum Corporation or, in the case of the steel framing components, be provided by a steel manufacturerauthorized by G-P Gypsum Corporation unless otherwise indicated. All materials shall be installed in accordancewith printed installation instructions as required by the testing agency.

1.3 SubmittalsProduct Data: Submit G-P Gypsum’s descriptive literature for each shaftwall component indicating materials,dimensions, finishes and other data required to show compliance with the specifications.

1.4 Delivery, Storage and HandlingDeliver materials in original packages, containers or bundles bearing G-P Gypsum’s brand name and identification.Store materials level, inside, under cover. Keep materials dry and protect from weather and damage from con-struction operations and other causes. Handle shaftwall system components to prevent damage to edges, ends orsurfaces. Protect metal accessories, framing and trim from bending and damage. Product also may be wrapped intemporary factory-applied plastic packaging (plastic wrap) that must be removed upon receipt. Failure to removethe plastic shipping covers and plastic wrap may result in entrapment of condensation or moisture,which may cause application problems.

1.5 Project ConditionsComply with the requirements of gypsum board application standards and recommendations of G-P Gypsum forenvironmental conditions before, during and after application of DensGlass Ultra Shaftliner panels and gypsumboard. Heat corridor or shaft when outdoor temperature is below 50°F for a period of 48 hours prior to, during andfollowing installation of joint treatment materials. Ventilate building spaces as required to remove excess mois-ture that would prevent drying of joint treatment material immediately after its application.

2.0 MaterialsA. Metal framing:

1. J Track:Galvanized steel, conforming to ASTM C 645 manufactured by Dietrich Industries, Inc., Marino Ware andWestern Metal Lath.Width: 2-1/2", 4" and 6"Gauge: 20 at elevator doors and masonry cavities and 25 standard elsewhere.

2. C-T studs:Galvanized steel, conforming to ASTM C 645 manufactured by by Dietrich Industries, Inc., Marino Ware andWestern Metal Lath.Width: 2-1/2", 4" and 6"Gauge: 20 and 25

B. 1" DensGlass Ultra Shaftliner panels, conforming to ASTM C 442 and ASTM C 1396.

C. 1/2" or 5/8" ToughRock® FireguardTM C gypsum board, 1/2" DensArmor PlusTM Fireguard C gypsum board, 5/8"DensArmor Plus Fireguard Type X or 5/8" ToughRock Fireguard Type X* conforming to applicable standards of

ASTM C 36, ASTM C 1396 and ASTM C 1177.

D. Fasteners: For 25-gauge framing - Type S screws. For 20-gauge framing - Type S-12 screws.

E. Joint tape: G-P Gypsum tape for reinforcing joints.

F. Joint compound: G-P Gypsum Ready Mix All Purpose Joint Compounds for bedding taping, finishing joints,spotting fasteners.

Part 1 – General

Part 2 – Products



*For fire safety information, visit www.gp.com/gypsum/firesafety

3.0 InstallationFollow G-P Gypsum recommendations for installation of metal framing and gypsum board for shaftwall systems.

3.1 Installation of J track, C-T, C-H or I studs and 1" Shaftliner Panels:Lay out shaftwall in locations indicated on construction drawings.Anchor J track perimeter framing at abutting horizontal and vertical construction.Anchor with approved fasteners spaced maximum 24" o.c.Apply non-hardening, flexible sealant in a continuous application at the perimeter.Space C-T studs at 24" o.c. Adjust the spacing at ends of shaftwall construction so end studs are minimum 8"from the ends.Install the first DensGlass Ultra Shaftliner panel. The panel length shall be 3/4" less than the total height of theframed section. Plumb the panel against the web of the J track and bend out tabs in J track to secure the panelin place.Insert a C-T stud into the top and bottom J tracks and fit tightly over the previously installed 1" panel. Allow equalclearance between track and stud at top and bottom J track. The stud length shall be 3/4" less than the totalheight of the framed section.Install the second 1" DensGlass Ultra Shaftliner panel inside the J track and within the tabs of the C-T stud.Install succeeding studs and panels in the same manner as described for the first and second panels until thewall section is complete.Anchor the final panel section at 12" o.c. with tabs from the J track.Where wall heights exceed the standard or available length of DensGlass Ultra Shaftliner panels, the panelsshall be cut and stacked. The shorter panels shall be minimum 24" long and of sufficient length to engage twostud tabs. Joints of adjacent panels shall be offset at least 12".For doors, ducts or other large penetrations or openings, install J track as perimeter framing. Use 20-gauge trackwith a 3" back leg for elevator doors and block cavity. Install 12" wide gypsum filler strips for doors exceeding7'-0" height.

3.2 Installation of Gypsum Board:A. DensGlass Ultra Shaftliner shaftwall system finished one side:

Install the first layer of gypsum board horizontally with approved fasteners spaced 24" o.c. and 3" from alledges. Offset the horizontal joints minimum 12" from any splice joints in the shaftliner panels. Install the facelayer of gypsum board parallel to the framing with approved fasteners spaced minimum 12" o.c. and 6" fromall edges. Offset edge and end joints from the base layer at least 24".

B. Stairwell system, finished both sides:Install gypsum board on both sides, either horizontally or vertically. Attach gypsum board with approvedfasteners spaced 12" o.c. and 6" from all edges. Offset edges and ends of gypsum board on opposite sidesminimum 24".

3.3 Finishing:

Apply a non-hardening, flexible sealant continuous at all perimeter edges, abutments with dissimilar materialsand penetrations in the facing layer.

Tape and finish all joints at face layers with tape and joint compound and finish fastener heads with joint com-pound meeting ASTM C 475.

3.4 Protection of Work:Protect shaftwall work from damage and deterioration until date of substantial completion.

Repair damaged work to be indistinguishable from adjacent work. Replace work that cannot be repaired asrequired.

Non-load-bearing; not to be used as an unlined air supply duct.Not designed for exposure to constant high-moisture conditions or direct water after building is complete.Elevator door assemblies require support independent of shaftwall partitions.Good construction practice calls for partition control joints to coincide with that of the building structure.Limiting loads and heights not to exceed design specification or data provided herein or by metal component supplier.Provide flexible sealant/caulk at partition perimeters and penetrations to avoid air leakage/whistling and dustcollection.

Limitations

Part 3 – Execution



©2006 G-P Gypsum Corporation. All rights reserved. Printed in the U.S.A. GEO 11/06. GP Lit. Item #531550.

DensArmor Plus™ Paperless Interior DrywallDensArmor Plus is a new generation paperless drywall designed as a replacement for paper-faced drywall for building interiors.DensArmor Plus drywall incorporates glass mats on the surfaces of the drywall panel instead of paper facings found on traditional drywall.The combination of paperless surfaces and a moisture resistant core provides superior moisture- and mold-resistance when compared totraditional paper-faced drywall. G-P Gypsum offers a three-month in-place exposure warranty which means DensArmor Plus can behung before installing doors and windows. DensArmor Plus installs using the same steps as traditional drywall.

DensGlass Gold® Exterior SheathingDensGlass Gold exterior sheathing is a moisture-resistant gypsum panel that can be used for exterior walls, ceilings and soffits. Itspaperless, glass-mat facings and moisture-resistant core resist the effects of surface water exposure while providing resistance to mold.With a long established track record, DensGlass Gold sheathing is so weather resistant that it is backed with a six-month in-placeexposure warranty. DensGlass Gold is the preferred sheathing for use under brick, stone, stucco and EIFS siding materials. DensGlassGold sheathing is so widely used that its bright GOLD™ color is recognized throughout the industry.

DensShield® Tile BackerDensShield tile backer is a patented substrate for floor, wall and ceiling ceramic tile installations. Designed with a built-in moisture barrier,DensShield protects tile installations and the wall cavity from the effects of moisture in damp areas such as bathrooms and kitchens.Incorporating glass-mat facings and a moisture resistant core, DensShield is lighter and easier to install than heavy, hard-to-work-withcement board tile backers. The combination of moisture and mold resistance, along with potential labor savings, makes DensShield thesuperior substrate for ceramic tile in the industry. Georgia-Pacific backs DensShield tile backer with a lifetime limited warranty whenused in residential tile installations. In addition, DensShield offers a 20 year limited warranty for its use in commercial applications.

DensGlass Ultra™ ShaftlinerDensGlass Ultra Shaftliner is the ideal component for gypsum board shaft wall/stairwell and area separation wall systems when a firerating is required. DensGlass Ultra Shaftliner incorporates a moisture and mold resistant, non-combustible gypsum core with paperlessglass-mat facings to resist exposure to the elements during the early stages of the construction cycle. Backed by a six-month in-placeexposure warranty, DensGlass Ultra Shaftliner is the perfect substitute for heavy, expensive masonry construction. It also offers superiormoisture and mold resistance compared to traditional paper-faced shaftliner wallboard products.

DensDeck® Roof BoardVersatile DensDeck roof board is utilized in a wide variety of roofing systems for new and re-roofing applications as cover boards, overlay-ments, underlayments and separator boards. Featuring a combination of fire resistance, strength, moisture resistance and dimensionalstability, DensDeck roof board enhances the overall performance of most roofing assemblies and is widely respected and specified by lead-ing roofing system manufacturers. DensDeck roof board, with its paperless glass-mat facings, has been shown to withstand delamination,deterioration, warping and job site damage far more effectively than paper-faced gypsum board or other conventional roofing products,such as wood fiberboard and perlite.

DensDeck Prime® Roof BoardDensDeck Prime roof board from G-P Gypsum combines the superior features of DensDeck roof board, including fire resistance, strength,moisture resistance and dimensional stability, with an enhanced surface treatment. The coated surface of DensDeck Prime providesan ideal substrate for a wide variety of adhered roofing systems by allowing a uniform spread of adhesives, which results in a strong,consistent bond. DensDeck Prime can be used in cold mastic, torch applied modified bitumen as well as fully-adhered, single-ply systems.

DensDeck DuraGuard® Roof BoardDensDeck DuraGuard roof board from G-P Gypsum combines the superior features of DensDeck roof boards, including fire resistance,strength, moisture resistance and dimensional stability, with a durable, low perm, integrated coating. This coating provides an idealsubstrate for a wide variety of adhered roofing systems, including self-adhered, hot-mopped membranes, and torched asphaltic systems.The coating assures more uniform spreading of adhesives, an excellent coverage rate, and it enhances the bond strength of membranesystem-to-board without the need for field priming with a number of systems.

www.scscertified.comSCS-RRC-01319

90% Recycled Content

Minimum 90% post-industrial recycled

gypsum, on a dry weight basis

SALES INFORMATION AND ORDER PLACEMENTU.S.A. Midwest: 1-800-876-4746 West: 1-800-824-7503

South: 1-800-327-2344 Northeast: 1-800-947-4497

CANADA Canada Toll Free: 1-800-387-6823Quebec Toll Free: 1-800-361-0486

G-P Gypsum Technical Hotline: U.S.A. and Canada: 1-800-225-6119

Some of our products have been certified by ScientificCertification Systems (SCS). SCS is an internationallyrecognized third-party evaluation, testing andcertification organization. Its program spans a widecross-section of the economy, including manufacturingand retailing, consumer products, the energy industry,and the home improvement and construction sectors.For details on specific G-P Gypsum products and plants,please contact our Technical Hotline at 800-225-6119.

TRADEMARKS DENS, DENSARMORPLUS, DENSDECK, DENSDECKDURAGUARD, DENSDECK PRIME,DENSGLASS GOLD, DENSGLASSULTRA, DENSSHIELD, FIREGUARD,TOUGHROCK and the color GOLDare trademarks of Georgia-PacificCorporation or one of its subsidiaries.

UPDATES AND CURRENTINFORMATION The informationin this document may changewithout notice. Visit our website forupdates and current information.

LIMITATION OF REMEDIES ANDDAMAGES Unless otherwisestated in our written limitedwarranty for these products, oursole liability for any product claimshall be limited to reimbursementof the cost of repair or replacementof the affected product, up to amaximum amount of two timesthe original purchase price for theaffected product. We shall not beresponsible under any circum-stances for lost profits, damageto a structure or its contents, or in-direct, incidental, special orconsequential damages. Claimsshall be deemed waived if theyare not submitted to us in writingwithin ten days after discovery.

SAFETY CAUTION: Some productscontain fiberglass. Fibers and dustmay be released from these productsduring normal handling and mayresult in skin, eye and respiratoryirritation. Avoid breathing dust andcontact with the skin and eyes.Follow these standard work practices:Wear a loose-fitting, long-sleevedshirt and long pants, protectivegloves and eye protection (gogglesor safety glasses with side shields).Wear a dust mask when sanding.Additional protection may beneeded when very dusty. Do notuse a power saw. For MaterialSafety Data Sheet or additionalinformation, call 1-800-225-6119or visit our website.

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